Refuse-destructor.



A. BRECHOT.

REFUSE DESTHUCTOR.

APPLICATION FILED JUNE 4. 1913.

1,226,943. Patented May 22, 1917.

3 SHEETS-SHEET I.

m: unnms PEYERS m, PNOTD-LITNO.. wlsmucmm u c.

A. BRE/CHOT.

REFUSE DESTRUCTOR.

APPLICATION FILED JUNE 4. 1913.

1,226,943. Patented May 22,1917.

3 SHEETS-:SHEET 2.

. F15 224 4;. W w 1 24,0

A. BRECHOT.

REFUSE DESTRUCTOR.

APPLICATION FILED JUNE 4,1913- 7 Patented May 22, 1917.

3 SHEETS-SHEET 3- WITNESSES: //VVE/ 7',0/?:

W ZZ r w m: mmms PETERS conpuomumouvn u u mu hearth is being dumped.

UNITED STATES PATENT OFFICE.

ARTHUR BRECHOT, OF PARIS, FRANCE, ASSIGNOR TO COMPAGNIE DINCINERATION INDUSTRIELLE, OF PARIS, FRANCE.

REFUSE-DESTRUCTOR.

Application filed. June 4, 1913.

To all whom it may concern:

Be it known that I, ARTHUR Bniioi-io'r, a citizen of the Republic of France, residing in Paris, France, have invented certain new and useful Improvements in Refuse-Destructors, of which the following is a speci fication.

The present invention has for an object to provide a furnace particularly designed for the burning of clinker-forming materials, such, for instance, as refuse of various kinds. It is well 'known that, in the incineration of garbage and other refuse, this fuel gives rise to a very considerable mass of ashes and cinders accompanied with the formation of clinkers. In the operation of such a furnace, it is necessary to clean the hearth quite frequently in order to get rid of the refuse. This labor is very onerous and dangerous to the operator as ithas here'- tofore'been accomplished withthe present form of flat gratereached by opening a door to the hearth. ,The opening of the hearth and the raking down of the ashes and clinkers (otherwise called incandescent substances) and causing these to fall out of the hearth, is quite apt to cause fire-box flames which not only develop .a considerable heat, rendering this labor very burdensome, but also frequently burst forth and injure the operator, who is thus constantly exposed to great danger from this source. Moreover, when these incandescent cinders fall into the receptacle placed in front of the furnace, they are apt to give off flame and flashes, not only immediately after their deposit therein, but while they are being carried from the furnace.

' The present improvement is designed to remedy the inconveniences and dangers above referred to and to avoid the cooling of the hearth due totheentry of external air during *theoperation of clearing off the grates, thereby assuring perfect combustion of the refuse and waste. The present improvement also provides a forced draft to the firebox and also provides means for cooling the fire-box by a draft of air, not only during the normal operation of the furnace, but also during the times that the Another object of the invention is to provide the furnace Specification of Letters Patent.

Patented May 22, 1917.

Serial No. 771,634.

with rails and the hearth with wheels, whereby the entire hearth, comprising the firebox, grate, etc., may be readily removed from the furnace and an interchangeable hearth immediately substituted therefor.

The description which will follow, reference being had to the annexed drawing given by way of example, will clearly show the nature and theadvantages of this invention.

Figure 1 shows in longitudinal sectional view a furnace embodying the improvement of the present invention particularly constructed for burning household refuse, and provided with a dumping fire-box 0r hearth.

Fig. 2 is a frontelevation thereof.

Fig. 3 is a horizontal section taken 011 a plane at about the line XX of Fig. 1; and

Fig. 4 is a vertical section taken on a plane 'at about the line ZZ of Fig. 1.

The dumping demountable hearth illus trated herein by way of example is designed to permit the easy and rapid emptying of the ashes and clinker, and is shown located in a masonry furnace. The hearth is shown comprising a hearth-pan 32 provided with curved walls and normally disposed in a horizontal position. To the upper edge of the hearth pan there is shown fastened a fire-box 83 of trapezoidal section. The bottom of the firebox is provided with a grate 3st. An ash-pan is shown pivoted at 56 to the lower portion of the hearthpan 32. The inner part of the ash-pan is provided with cross-bars 5a which serve to support the independent grate elements An air chamber is provided between the hearth-pan and the fire-box and between the grate and the ash-pan for the purpose of cooling the clinker-forming elements of the fuel. The hearth is mounted so that it may oscillate for thepurpose of dumping, and is shown provided at its respective ends with trunnions 35, 36 carried by the hearth-pan 32 and supported in suitable bearings shown in the form of boxes 72, 73 mounted on a car or carriage preferably formed of ribbed iron and comprising two side portions 37, 38 connected by a front portion 39. The two side portions are provided with wheels l0, ll mounted upon rails 42, 43 located at the respective sides of the hearth chamber of the furnace. In the illustration, the front portion 39 of the carriage is designed to form a panel of the outer wall of the furnace and is completed 'by jointed plates of cast iron 44 and a refractory lining 45.

V When the hearth is placed in the furnace,

ing the passage of the trunnions 35 and 36 and their bearings 72 and 73. The influx of air for effecting the cooling and for supporting combustion takes place in the illustrated apparatus on one side only and by means of a bent tube 74 connecting a conduit 19 with the trunnion 35 which is hollow.

In order to completely insulate the hearth, the box 70 being open 'onits two sides for the passage of. the trunnion 35 and its hearing 72, there is placed externally of this box a plate 52 suitably bolted in position.

The grate, in order to be easily replaced by another, is formed of independent elements 34 held in position between the lower portion of the fire-box 33 and the cross bars or ribs 54 integral with the ash-pan 55. The ash-pan 55 (see Fig. 4) is shown provided with a small door 57 situated at theend opposite the air inlet passage 74, 35. This 7 door is normally. held closedby a spring 58 and is opened by means of a rock shaft 59 and lever 60. Theinrushing current of air under the grate is sufliciently strong to expel the ashes from the ash-pan through this doorwhen the door is open.

In the installation illustrated, the rotation of the hearth is effected by means of a handle 61 mounted on a worm 62 meshing with a worm-wheel 63 keyed upon the trunnion 35. The rotation of the hearth by means of the worm 62 may be utilized by means of a chain 64 and wheels 65 for bringing about at the same time the opening of a door'66 which closes the lower portion of the furnace. This concurrent opening of the doorwith therotation of the hearth is I to allow the discharge of the cinders, etc., which are emptied from the hearth. When the incineration of a charge of refuse coming from the sole 20 of the furnace and v filling the fire-box is ended, the handle 61 is turned in order to cause the fire-box to make ator disconnects the tube 74 from the plate and thus free it- 52 and the operating devices 59 and 60 from the door of the ash-pit, then the worm 62 is disengaged, the worm being shown supported by means of movable bearings 67 and 68; the chain 64 is then disconnected and then the panel 39 isunbolted. -The chain or cable is then connected to the ring 69 of the carriage and it is drawn out of the furnace. Another hearth brought up on the rails by some suitable means, as, for instance, a turntable, can be immediately put in the place of the one removed. It will be seen that this work can be performed very rapidly and without necessitating any material interference with the running of the furnace,

Claims:

1. A hearth comprising a fire-box, and a grate carried thereby, a hearth-pan disposed air chamber while the hearth isin its nor- 7 mal and in its dumped positions, and mechanism for turning the hearth on its pivots for dumping the same. I

3. A hearthcomprisinga fire-box, and a grate carried thereby, a hearth-pan disposed outwardly of such fire-box and connected to the upper edge thereof, there being an air chamber between the fire-box and hearthpan, trunnions for pivotally supporting said hearth, and means for tilting the hearth for dumping the same, an ash-pit door and mechanismfor operating the same controlled by the hearth tilting mechanism.

4. The combination with a furnace, provided with a hearth chamber andrails located. upon the respective sides thereof, of :1 carriage having wheels adapted to run upon said rails, and a hearth pivotally mounted upon the carriage and disposed between the said wheels and constructed and adapted to be tilted upon the carriage while the carriage is in position in thehearth chamber.

5. The combination with a furnace, of a hearth comprising a fire-box, a grate carried thereby, a hearth pan surrounding the fire-box and grate, mechanism for mechanically dumping the hearth, and means for supplying a current of air to the outside of the fire-box while the grate is in its normal and in its dumped position.

6. A hearth comprising a fire-box, a grate carried thereby, a hearth pan surrounding 1 the fire-box and grate and afiording an air my name in the presence of two subscribing chamber between said fire-box and hearth Witnesses. pan, means for pivotally supporting the said hearth, and means for supplying air to said 5 air chamber While the hearth is in its normal Witnesses:

and in its dumped position. LUOIEN WANMEYER, In Witness whereof, I have hereunto signed GABRIEL BELLIARD.

ARTHUR BRECHOT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

